Good shot...
As for extra spikes, once I had a laundry dryer wire in optical path (I didn't see it in the dark , it became obvious only later.... and it was also eta).
Nice result , I can vouch for the 60d it really does produce the goods for a dslr. Well done, I like the colours too. Stars look cool. Tracking seems good too for 1minute exposures. I struggle to get 40sec from my newt!